Fix NetworkInterface on sholes/ppp.

We need to use IFA_LOCAL to get the interface addresses; IFA_ADDRESS is the
remote address (which is usually the same as IFA_LOCAL, but not in the ppp
case).

Tested on sholes, where it fixes the test used in the bug; also tested on
passion, where it doesn't break the already-working test.

Bug: 2575983
Change-Id: Ib334a002dc099daeeb05cbc341fe233d4d11d2f7
1 file changed